Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

Determine how good we are at direct and indirect observation.

This science fair project examines whether ocean water can be made safe to drink.

This science fair project idea investigates food preference of birds.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Explore this fun middle school science fair idea to learn about photosynthesis and the key role of light in the growth of green plants.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.